Often we form opinions of music because of how aggressive, depressing or joyful we perceive it to be. But studies into the effects of different music genres on listeners' moods throw up some surprises.

The biopic Straight Outta Compton tells the story of rise and fall of Los Angeles rap group NWA.
Automotive Rhythms/flickr13 août 2015

Guardians of the Galaxy star Chris Pratt can currently be found battling in multiplexes around the world, but as the recent viral video of him shows, he also has a magnificent ability to rap. (Just don’t…